There are pros and cons to towing with a dolly. I towed for some time.
Here is what I found:
1. Parking the dolly when space wasn't long enough. Unless the ground was really level,it was very hard, or impossible to move the dolly. I finally installed a receiver on my car so I could move the dolly around.
2. It does take a lot of effort to load/unload the dolly because you have to have enough room to drive onto it straight and need to tie everything down.
3. You may need auxiliary wiring for tail/back up and turn signal lights, depending on length of the car. Some states require lighting if the vehicle extends more than 3' from taillights on the dolly. I wired my vehicle to accept a plug-in for lighting. I towed once with external lights and did damage paint.
4. Must have brakes on the dolly, depending on weight. I would guess that vehicle is heavy enough to require them.
5. The biggest thing for me was parking. Many, many of the RV park spaces were not long enough for my 36' DP, tow dolly and toad. I always had a hassle with that.
6. If you can't tow 4 down, then a dolly is the way to do it.
I never had a sway issue because the hitch was installed properly at right height for towing,